Bihar's teachers failing the basic eligibility test shows how deep the fault lines in our education system are, and how students are suffering for no fault of theirs. Year after year, the Annual Status of Education Report (ASER), authored by Pratham, a non-governmental organisation, underscores the poor quality of primary education imparted to disadvantaged students in classrooms across India. True, some states perform better than others. But the overall quality of education, no doubt, continues to be a source of grave concern.